Dnia 27.10.2023 o godz. 15:19:33 Cyril - ImprovMX via mailop pisze:
> 
> It's been quite common to refuse a server connecting that doesn't have a
> proper PTR, but I was wondering if there was any recommendation (either
> official via RFC or standard practice) about a server connecting with a PTR
> that is different from the announced hostname at the HELO/EHLO command.

From my experience, it happens quite often.

I once checked HELO/PTR alignment on my server, but it resulted in a LOT of
false positives and rejecting legitimate mail. So I wouldn't recommend it.
-- 
Regards,
   Jaroslaw Rafa
   r...@rafa.eu.org
--
"In a million years, when kids go to school, they're gonna know: once there
was a Hushpuppy, and she lived with her daddy in the Bathtub."
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